The Elements of Style is a writing style guide of a list of 49 "words and expressions commonly misused", and a list of 57 "words often misspelled".
William Strunk Jr. (July 1, 1869 - September 26, 1946) was an American professor of English at Cornell University and author of The Elements of Style (1918). After revision and enlargement by his former student E. B. White, it became a highly influential guide to English usage during the late 20th century, commonly called Strunk & White.